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(Dynamic Network Flows) The arcs (i, j) of a graph carry flow xij (t) in time period t, where t = 1,...,T. Each arc requires one time unit for traversal; that is, flow xij (t) sent from node i to node j along arc (i, j) at time t arrives at node j at time t + 1. The difference between the total flow departing and arriving at node i at time t = 2,...,T is a given scalar si(t). The total flows departing from each node i at time 1 and arriving at each node i at time T + 1 are also given
and X(t) is a given set for each t, as a network optimization problem involving a suitable graph that consists of multiple copies of the given graph.
(b) Repeat part l case where traversal of an arc (i, j) requires a given integer number of periods τij
question two types of vehicle use the university central bus station uni-link buses and national express coaches.a on
a report issued by the american association of building contractors indicates that 40 of all home buyers will do some
the point estimate for a processor that world correctly for at least 1000 hours based on a sample size of 100 is .91.a
Describe how to draw the sample as a cluster random sample, using flights as the cluster. Describe how to draw the sample as a systematic sample from these flights.
So construct a multiple regression model for predicting the crime rate based upon various explanatory variables unemployment rate, median income, education level.
Consider the experiment of rolling a pair of dice. Suppose that we are interested in the sum of the face values showing on the dice.
a. Assuming that s1 = 1.2 and s2 = 1.1, test the relevant hypotheses using a = .001. b. Compute b for the test conducted in part (a) when m1 - m2 = 6.
She obtains a random sample of 34 students who do not plan to take a tutor and a random sample of 38 students who do plan to take a tutor and obtains the following results.
If a correlation coefficient was calculated for n = 15, alpha = 0.01, and r = 0.85, what is the test value found using the t-test?
a pearsons correlation coefficient of -.05 would represent a scatter plot in which1. the regression line slopes
Consider an urn that contains 40 balls. Of these 20 are red, 10 are green, and the remaining are blue. What is the probability that if nine balls are randomly selected from the urn then exactly three are of each color?
Combining all of the games played, what proportion did the Yankees win? Compute the z statistic and its P-value. What conclusion do you draw?
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